Replacement W10112253 Mixer Worm Gears — 2 pieces. Engineered to restore smooth, reliable mixing by replacing worn or damaged worm gears in compatible KitchenAid and Whirlpool stand mixers. Key benefits Restores performance: fixes issues such as an unresponsive control interface and unusual grinding noises from the gear housing so your mixer returns to its intended mixing operation. Durable construction: strength reinforced nylon body with a solid aluminum hub resists wear and cracking for longer service life under normal mixing conditions. Directfit replacement: engineered to part number W10112253 and compatible with several common codes (4161531, 4162897, 4169830, WPW10112253, PS11748374, AP4295669), simplifying repairs and reducing downtime. Value pack: includes 2 PCS W10112253 mixer worm gears, providing a spare or a pair for dualgear repairs. Compatibility (includes, but not limited to) KitchenAid models: 5K45SS, 5K5SS, 5KPM5, 3KSM150PSTBW0, 4KSM150PSTG0, 3K45SS, 3K5SS, 3KSM150PSTCB0, 3KSM150PSTOB0, 4K45SS, 4K45SS7OB0, 4KPD1620T2, 4KSM50PWH0, 4KSM90PSGN0, 5KSM150PSDEB0, 5KSM45EWH4, and other similar KitchenAid models. Whirlpool models: KSM88RBQ2BY0, KSM150PSBV0, KSM153PSQGA0. Material and function Material: reinforced nylon gear body combined with a solid aluminum hub for strength where it matters most. Function: replaces the worm gear that transfers motor rotation into planetary motion; designed to match the original gear's fit and restore correct gear engagement and speed control. Practical use scenarios a mixer that makes grinding noises when loaded with dough: the worn worm gear to stop the noise and prevent further gear housing damage. Restore speed control on a mixer with an intermittent or unresponsive control: swapping in worm gears can reestablish proper engagement and control response. Preventive maintenance for frequent bakers: aged gears to avoid midrecipe failures and extend overall mixer life. What's included 2 PCS W10112253 Mixer Worm Gears (reinforced nylon with aluminum hub). Notes Confirm your model number and listed part codes before ordering to ensure compatibility.